Traveling block



Jul 29, 1930;

H. J. BYERS TRAVELING BLOCK Filed Nov. 29, 1927 Patented July 29, 1930 HARRY JEROME BYERS, OF BEAUMONT, TEXAS TRAVELING BLOCK Application filed November 29, 1927. Serial No. 236,500.

This invention relates to traveling blocks and more particularly to the construction of a traveling block providing a hne gulde and further providing both spacers and counterweighting mechanism for the travellng block, so that it will operate through gravity wlthout the necessity of attaching a separate counterweight therewith and without danger of the lines thereof becoming entangled.

An important object of the invention is to provide a construction whereby these functions are combined in a single element.

These and other objects I attain by the construction shown in the accompanying drawing, wherein for the purpose of illustrat on is shown a preferred embodlment of my 1nvention and wherein Figure 1 is a side elevation of a block constructed in accordance with my invent1on;

Figure 1 is a section on the line 2-2 of Fig ure 1.

Referring now more particularly to the drawing, the numerals 10 and 11 deslgnate the upper and lower eyes of a traveling block. The pivot pins 13 of these sw vel elements provide a mounting for partition plates 14 between which the sheaves 15 of the pulley operate. The outer plates 14 may have applied thereto reinforcing plates 16, 1n whlch the sheave axle 17 is mounted.

In accordance with my invention, the plates 14 are continued downwardly below the sheave axle a considerable distance and are gradually tapered toward their lower ends. Between adjacent faces of the plates and above the swivel pin 13 of the lower eye 11, I arrange solid metal castings 18, the upper surfaces 19 of which are curved to conform to the curvature of the sheaves 15 and closely approach the same. These upper surfaces are grooved, as at 20, for the passage of the lines and combine with the sheaves to form a fair lead, preventing these lines from jumping or jamming between the plates 14 and the sheaves. The individual castings 18 are of considerable weight, with the result that as an aggregate, they form a counterweight, preventing tilting or turning over such a block, the individual add approximately sheave block,

castings 18 will four hundred pounds to 5 the weight of the block, so that with a three such as illustrated, the added weight would be twelve hundred pounds. TlllS weight is quite sufficient to maintain the block at all times 1n its to insure the block traveling proper position and downwardly by gravity and without any external assistance.

These castings will, of cours e, take the place of the ordinary spacers employed for maintalning the plates 14 in properly spaced relation and perform the func tions ordinarily performed thereby in addition to the other functions which the plates perform.

Since the construction hereinbefore set forth is capable of a certain range of change and modification without materially departing from the spirit of the invention, I do not limit myself to such specific structure except as hereinafter claimed.

1. A traveling block comprising a pair of spaced plates, pivotally carried by said plat versely upper and lower eye members es, an axle transmounted in the plates, a sheave rotatable upon the axle, and counter-balance means carried by said from the axle, having arcuately lnchned plates spaced downwardly said counter-balance means grooved upper end portions whereby to combine with the sheave peripheries to produce fair leads.

2. A traveling block of the character described comprising a plur plates, upper and lower eye ally carried by said plates,

ality of spaced members pivotan axle transversely mounted in the plates, sheaves rotatable upon the axle, counter-balance means adapted to be interposed between the plates, means for securing the counter-balance means between the plates, said counter-balance means having arcuately inclined grooved upper end portions, said upper end portions being positioned in close proximity to the periphery of said sheaves whereby to produce fair leads.

In testimony whereof I hereunto affix my signature.

HARRY JEROME BYERS. 

